Document Detail

Different pattern in gap balancing between the cruciate-retaining and posterior-stabilized total knee arthroplasty.
MedLine Citation:
PMID:  23322266     Owner:  NLM     Status:  Publisher    
PURPOSE: In order to permit soft tissue balance under more physiological conditions during total knee arthroplasties (TKAs), an offset-type tensor was developed to obtain soft tissue balancing throughout the range of motion with reduced patello-femoral (PF) and aligned tibiofemoral joints. The main purpose of the present study was to assess intra-operative soft tissue balance using a navigation system with the offset-type tensor in both cruciate-retaining (CR) and posterior-stabilized (PS) TKAs. METHODS: One hundred and twenty TKAs-80 CR and 40 PS-were performed in patients with varus-type osteoarthritis using a computed tomography-free navigation system. The offset-type TKA tensor with a reduced and repaired PF joint and femoral component in place was used with the tibia first gap technique to balance soft tissues (joint component gap and ligament balance) at 0°, 10°, 30°, 60°, 90°, and 120° of flexion. The achievement in equalized rectangular gap at extension and flexion-joint component gap within ±3 mm between extension and flexion and ligament balance within ±3° at extension and flexion-was assessed retrospectively. RESULTS: Both types of implants showed similar patterns of soft tissue balance throughout the range of motion, whereas PS TKA had larger values especially at 60° or 90° of flexion than did CR TKA. In the achievement of equalized rectangular gaps at extension and flexion, CR TKA was superior to PS TKA. CONCLUSION: Using the tibia first gap technique with the tensor allows appropriate soft tissue balancing, especially in CR TKA. LEVEL OF EVIDENCE: Therapeutic studies, Level II.
Tomoyuki Matsumoto; Seiji Kubo; Hirotsugu Muratsu; Takehiko Matsushita; Kazunari Ishida; Yohei Kawakami; Shinya Oka; Tokio Matsuzaki; Yuichi Kuroda; Kotaro Nishida; Toshihiro Akisue; Ryosuke Kuroda; Masahiro Kurosaka
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-16
Journal Detail:
Title:  Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA     Volume:  -     ISSN:  1433-7347     ISO Abbreviation:  Knee Surg Sports Traumatol Arthrosc     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9314730     Medline TA:  Knee Surg Sports Traumatol Arthrosc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan,
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